Circular weft-winding machine



A. SCHAUFELBER-GER CIRCULAR WEFT WINDING MACHINE.

Patented June 15, 1920.

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APPLICATION FILED FEB. 6. I918- Jnuen Z07. fl. SakafifeZZeryer,

A. SCIIAUFEL'BERGER. CIRCULAR WEFT WINDING MACHINE.

APPLICATION FILED FEB- 6, I9I8- 1,343,481 Patented June 15, 1920.

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Patented June 15, 1920.

3 SHEETS A SCHAUFELBERGER. .CIRCULAR WEFT WINDING MACHINE.

APPLICATION FILED FEB- 611918- L 8 A. 3 4 Wu UNITED STATES PATENTOFFICE.

ALBERT SCHAUFELBERGEB, OF PARIS, FRANCE.

Specification of Letters Patent.

Patented June 15, 1920.

Application filed February 6, 1918. Serial No. 215,634.

To all whom it may concern:

Be it known that I, ALBERT SCHAUFEL- nnncnn, a citizen of the FrenchRepublic, residing at No. 14:0 Boulevard Voltaire, Paris, France, haveinvented certain new and useful Improvements in Circular VVeft-VVindingMachines, of which the following is a specification.

The ordinary weft-winding machines as hitherto employed, wherein theweft is wound in intersecting spirals upon pirns, are machines whereinthe spindles that carry the pirns are arranged in one or more straightrows, rotary motion being imparted to the spindles from a common shaftwith the necessary consequence that each spindle has to be provided withgear for throwing the driving mechanism into and out of engagementtherewith. The winding of the weft in intersecting spirals is efiectedby means of an oscillating weft guide which causes the weft to be woundupon the pirn in an up and down manner. The weft guide for each spindlethus necessitates a separate drive for each cam.

The present invention has for its main object to provide an improvedweft-winding machine of this type wherein the spindles are arrangedcircularly so that they can be all driven together by a common wheellocated inside the circle of the spindles, and all the weft guides arelikewise driven by a common cam.

Another object of the invention is to provide improved mechanism forarresting the motion of a winding pirn when the thread, being fed tothat pirn, is broken.

A further object of the invention is to provide means for automaticallystopping the operation of a spindle, when the pirn on that spindle iscompletely wound.

A still further object of the invention is to furnish improved mechanismfor insun ing tight winding of the pirns and for winding the pirnsprogressively from one end to the other.

This invention will now be described with reference to the accompanyingdrawings which illustrate a circular weft-winding machine with movablespindles. In these drawings:

Figure l is a section along the axis of the improved machine, and

Jig. 2 is a plan thereof.

Figs. 3, 4 and 5 which are drawn to an enlarged scale, are respectivelya side elevation, a front elevation and a horizontal section 011 theline a-a of Fig. 4:, of a spindle with its accessories.

Figs. 6 and 7 illustrate a detail of the means for effecting theautomatic discon' nection of a spindle.

Fig. 8 is a section of the cone mechanism for effecting the automaticdescent of the spindle during the winding of the weft.

in the ordinary machines of this type the weft is wound on a pirnconsisting of an open tube of slightly conical shape with its smallerend uppermost, this tube generally ends toward its base in a truncatedconical portion, the angle of which is approximately that which it isdesired to give to the upper portion of the body of the weft on the pirnduring the winding. The pirn is mounted on a rotary spindle. The weft iswound up and down upon the conical base. The weft is guided to the pirnby a weft guide having vertical oscillatory movements of an amplitudeequal to the height of said base. During the entire winding operationthe upper part of the body of the weftalready wound on the pirn forms acone having approximately the same angle as the base, while below thesaid cone the portion of the body of the weft which has already been completely wound, is cylindrical.

In addition to the above stated drawbacks of the straight-rowweft-winding Inacliines, there are to be added the very suddenoscillations of the weft guide for effecting the winding of the weft inintersecting spirals, which oscillations subject the weft at each changeof direction of motion to a sudden strain which is often the cause ofthe breakage of the weft especially in the case of rough weft.

In contradistinction to the above. in circular weft-winding machinesaccording to the present invention, the motion is extremely gentle inits action upon the crossing of the weft, owing to the circumstance thatthe common rotary cam plate for operating the weft guide has longascending and descending inclines.

A circular weft-winding machine with movable spindles according to thepresent invention is illustrated in Figs. 1 to 8.

The framing of this improved machine consists (Figs. 1 and 2) of abed-plate .l carrying a lower plate 2 and an upper plate 3 connectedtogether by uprights 4, 5, 6, 7. A vertical shaft 8 is mounted betweenthese two plates. This shaft 8 is fixed at its upper end to the camplate 9 for the weft guide, which is a rotary plate formed with an edgethe varying height of which imparts to the weft the verticaloscillations that are necessary to produce the winding in intersectingspirals. The shaft 8 carries at its lower part a driving wheel 10 whichproduces the rotation of the spindles. This niechanismcomprising theshaft 8, the cam plate 9 and the driving wheel 10, is actuated by meansof a leather-covered pulley 11 that drives the cam plate 9 fromunderneath. Thispulley 11 is mounted on a shaft 12 which is fixed to theframing and along which latter it can move in such a manner as to varythe speed of driving. The shaft 12 is driven by a pulley 13. Thespindledriving wheel 10 meshes with pinions 14 mounted in sleeves 16which constitute oil chambers and are fixed to the lower plate 2 bymeans of nuts 15 (Fig. A driving sleeve 17 provided with a driving stud18 engages with its cylindrical lower portion in the pinion 14. T hedriving stud 18 is adapted to drop into a semi-circular groove formed inthe upper face of the pinion 14, so as to drive when it is inengagement. 19 is a round spindle extending inside the driving sleeve17; this spindle is formed with a longitudinal groove 20 in which thereengages an internal projection (not shown) of the sleeve 17. By thismeans the spindle 19 is permitted to move up and down in the sleeve 17while being continuously rotated by the latter. The disengagement of thesleeve 1'7 and the pinion 14 is effected by means of the tappet 21 onthe disengaging rod 22 which is adapted to raise or permit lowering ofthe driving sleeve 17.

The spindle 19 is guided at its upper part by a vertically movablesupport 23 (Figs.

.3 and 5) through which the spindle passes freely and upon the upper endof which it rests with its base 24L. Above the base the spindle 19continues in the form of a straight stem upon which the pirn 25 isslipped. The movable support 23 is guided in a fixed support 27 fixed tothe plate 3 and provided with two grooves 26 in which there freelyengages a roller 29 mounted on a horizontal journal 28 (Fig. 4) carriedby the movable support 23. This movable support 23 is balanced in theusual manner by means of a descending bar 30 to the end of which thereis fixed a strap 32 which passing over the guide pulley 31, supports acounterweight 33. By this arrangement the cop formed on the pirn isdrawn upward. In this movement, its conical portion encounters, whensufiicient thickness of weft has become wound on, an inclined cone at(Fig. 1) that is mounted in a manner hereinafter described. As bestshown in Figs. l, 7 and 8, the bearing cone 34 forces the spindle andthe pirn to descend. As best shown in Figs. 1, 7 and 8, the bearing cone34 is rotatably mounted upon one arm of a bellcrank lever 59. This leveris ifulcrumed upon a pin 61, which is adjustably mounted in a curvedslot 60 passing through an arm 27 fixed to the stationary guide 27. Thelever carries a sleeve 59, which surrounds the pin 61 and a spring 62 islocated in said sleeve and has one of its ends connected to the sleeveand its other end fixed to the stationary washer 63 for the purpose offorcing the cone 34; toward. the lower cone 25 of the pirn 25. It willthus be seen that the cone 34, by being resiliently forced toward thepirn, has a tendency to cause the pirn to descend, as the threadaccumulates upon the same. By this means the inclined portion of theweft cop is always located opposite the point where the weft executesits vertical oscillations that are produced by the edge ofvarying-heights of the weft guide cam 9. The fixed guide 27 carries avertically extending post 36, which: is bent downwardly and inwardlyover the edge 37 of the cam plate 9. The inner end of the post 36 isbent into hook shape as shown at 52 and the free end of this hook-shapedpart terminates in a substantially horizontal hook 35. The weft 35coming from the upper partof the machine (in the known manner) passesthrough the hook 35, over the edge 37 and is secured to the cone 25 ofthe pirn 25. It will be seen that as the pirns 25 are rotated the edge37 of the rotating cam plate will first raise and then lower the thread35', so that said thread will be spirally wound on the pirns. It willalso be seen that the shape of the edge 37 will cause gradual upward anddownward movement of the thread and for this reason the thread will notbe subjected to sudden movements, which would be liable to break thethread. The edge of the weft guide cam 9 is formed in such a manner thatits lowest point and its highest point shall correspond respectively tothe bottom and to the top of the winding cone. But the profile of thisedge has a shape suited to the winding which is desired to be produced,and may have either a single incline as shown in the accompanyingdrawings, or it may have a plurality of ascending and descendinginclines of suitable inclinations and lengths. The size of the cop isregulated in the usual mannerby moving the fulcrum 61 of the cone 34(Fig. 4:) along the slot 60, as this will cause the lower ed re of saidcone to be moved toward or away rom the pirn, and consequently thethickness of the cop may be decreased or increased. The spindle is thuscompelled to descend only when the thickness of the weft, that isalready wound on the inclined part, comes in contact with the cone 34.

The stop motion referred to heretofore serves to produce a stoppage ofthe rotation of the spindle when the weft breaks. This stop motion isconstituted as follows: the fixed support 27 (Fig. 6) carries a pin 38on which is mounted the stop lever 39. This lever comprises two verticallimbs, namely, an upper limb 39* a lower limb 39", and also I ahorizontal limb 39 provided with a countel-weight 4G. The lower verticallimb has a stop shoulder 40 with which the tappet 41 of the verticallymovable stop rod 22 is caused to engage by the action of the coiledspring 42 (Fig. 4). On the pin 38 there is pivoted another verticallever 43 which is downwardly directed and terminates at its lower partin an inclined arm. This lever 43 carries a tappet 44 against which thelower vertical limb 39 of the lever 39 is caused to bear by the actionof the counterweight 46. The upper vertical limb 39 of the stop lever 39carries at its end a pin 47 on which is fulorumed a lever 48 that isconnected by a rod 49 to the weft stop motion device 51. This stopmotion device 51 is of angle shape and is pivoted on a pin 50 (Fig. 3)supported by the rod 36, the downwardly and inwardly extending end 51 ofthe stop device 51 bears against the weft, coming from above, before itenters the hook 35. If the weft should break, the stop motion device 51will rock so that its end 51 will move to the bottom of the hook-shapedpart 52 and the inner end of the lever 43 (Fig. 6) will be permitted todrop by its own weight into alinement with the bottom of the cam 9.

The bottom of the cam 9 is provided with a horizontally extendinginclined plane 53 and when the inner end of the lever 48 falls intoalinement with the bottom of the cam, said inner end will be engaged bythis inclined plane 53 and this will cause the upper limb 39 to moveaway from the vertical axis of the machine and thus rock the stop lever39. As the lever 39 rocks, its lower end releases the tappet 41 of thestop rod 22. When the tappet 41 is released, the coiled spring 42 (Fig.4) will raise the rod 22 until the tappet 41 contacts with the stopshoulder 45 (Fig. 6) of the lever 43. This rising movement of the stoprod 22 causes its lower tappet 21 to raise the driving sleeve 17, andconsequently arrests the movement of the spindle 19.

This stop motion mechanism is completed in such a manner that when thepirn has at tained the desired length the spindle will be automaticallystopped, andv the spindle which was in the lowest position risesautomatically into the highest position; the supporting cone being movedaway from it so as to allow of the removal of the filled pirn and of itsreplacement by an empty pirn. This mechanism is as follows: the movablesupport 23 of the spindle 19 (Fig. 6) is provided at its lower part witha tappet 54 which in moving down, strikes the inclined arm of the lever43. This arm is capable of adjustment according to the length of thepirn. This movement compels the lever 43 to rock to ward the right andcarry with it the lever 39 by means of the tappet 44. Consequently thestop shoulder 40 of the stop lever 39, and the stop shoulder 45 of thelever 43 are no longer in the path of the tappet 41 of the stop rod 22.This rod is therefore caused by its spring to rise until its lowertappet 21 (Fig. 4) strikes against a lug 55 on its lower guiding support56. This rise causes the disengagement of the sleeve 17, andconsequently the cessation of the rotation of the spindle. Further, theupper horizontal handle of the stop rod 22 strikes the tappet 57 (Fig.4) which is fixed to the movable abutment 58 that is guided in a socketof the fixed support 27 of the spindle. The abutment 53 raises the anglelever 59 carrying the cone 34, by causing it to rock 011 the pin 61. Thecone 34 moves away from the spindle 19 by an amount that is sufficientto allow free passage for the pirn which is caused by the counterweight33 to return into its upper position. The attendant has now merely toremove the filled pirn and to replace it by an empty one. Then hepresses upon the upper handle of the stop rod 22 which is sufiicient toreplace the handle and the cone 34 into operative position and to causethe spindle 19 to rotate. The cone 34 (Fig. 8) mounted on the anglelever 59, is returned into its operative position by the coiled spring62.

hat I claim is 1. In a weft-winding machine wherein the weft is wound inintersecting spirals, the combination of spindles located along acircumference, a common wheel actuating said spindles, said spindlesbeing movable along their axes and independent of one another; copshaving conical bases secured at the upper parts of the spindles, acircular plate having an edge of varying height serving as a common weftguide and rotating opposite the conical portion of the cops during thewinding, cones bearing on the cops, axes for said cones, springs tendingto draw said cones downwardly, stop members for said cones, andadjusting slides in which the axes of the cones are engaged.

2. In a weft-winding machine wherein the -weft is wound in intersectingspirals, the

combination of spindles located along a circumference, a common wheelactuating said spindles, said spindles being movable along their axesand independent of one another; cops having conical bases secured at theupper ends of the spindles; a circular plate having an edge of varyingheight and having an inclined plane at its outer part serving as acommon Weft guide and rotating 0pstop motion comprising a rocking tappetfor posite the conical portion of the cops during operating the meansfor stopping the ma- 10 the Winding, cones bearing 011 the cops axeschine, operated by the inclined plane on the for said cones, springstending to draw said Weft-guide plate.

cones downwardly, stop members for said In testimony whereof I havesigned my cones, adjusting slides in Which the axes of name to thisspecification.

the cones are engaged, a device for stopping said spindles at a desiredmoment, and a Weft ALBERT SCHAUFELBERGER.

